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I expected these flexible LED panels to look a little cheesy in a car, but they looked better than I thought they would. The animated eyes looked good against the windshield, and the app offers much more than the product’s “Devil Eyes” name suggests.
The package contained two flexible LED panels that connect to a phone through Bluetooth. The app let me control each panel separately or send the same design to both. The connection was finicky indoors. Keeping my phone within about three feet helped, and I sometimes had to move it even closer before a design would transfer. Several Bluetooth devices were operating in the room, which may have contributed, but I did not confirm the cause. The panels synchronized properly when I used them outside.
The app includes a large assortment of animated eyes, Halloween graphics, messages, emojis and other designs. I could draw in different colors, animate custom drawings and use the panels as colored lights. Other modes included a timer, scoreboard, word-guessing game and music-responsive display. I did not demonstrate the music mode or test photo uploads.
Photo support uses low-resolution output, so simple logos and bold images may work better than detailed pictures. That is my assessment based on the panel format and app preview, not a comparison test of uploaded images.
The panels were very bright indoors. The scoreboard was difficult to see clearly on camera because of that brightness. The seller says brightness can be adjusted in the app, but I could not find the control during my demonstration.
For the car test, I wedged the panels behind the windshield instead of attaching them permanently. Adhesive strips are included, but I did not test them on the car. The strongly adhesive pads shown during my wall demonstration were my own, not the included mounting strips. One panel fell from the wall and hit the floor during filming, and I continued the demonstration afterward. That single incident was not a comprehensive durability test.
Power is worth checking before installation. My panels had USB-C connections at the panel end, but they worked when powered through USB-A ports. I could not get my USB-C power setup to work, and I do not know whether the product has since changed. Cigarette-lighter adapters were included, although I could not test them because my car does not have that outlet. I used power banks instead. After roughly an hour, the power bank indicator had dropped by one bar. The bank may already have been partially discharged, so this was not a controlled battery-life test.
The seller describes the panels as thin, light and flexible and lists a 14.7-foot USB cable. The instructions warned me to roll the panels only in the specified direction rather than bending them backward.
Overall, I liked the panels. Bluetooth transfers could be frustrating, but the car display looked better than I expected. The range of built-in and custom display options also makes them useful for more than animated eyes. They could work as window signs or background displays. Before installing them in a vehicle, check your local laws and make sure the panels do not obstruct your view.